The EP is a collection of covers and unreleased original tracks. Producers Salaam Remi and Mark Ronson, Winehouse's frequent collaborators, chose the 12 songs from thousands of hours of the singer's vocals after her July death.

"My heart is sad but bursting with pride," Mitch Winehouse added on Twitter.

The patriarch has commented in the media on the difficulty of seeing more of his daughter's work released after her passing, but has been actively touting the Amy Winehouse Foundation. Part of the profits from Lioness will go to the namesake organization, which benefits children in need.